Tamper



March 2 1926.

J. A. MAYBERRY DAMPER Filed June 21, 1925 Patented Mar. 2, 1926.

UNITED STATES PATENT OFFICE.

JDHN A. MAYBEBRY, OF BELL, CALIFORNIA, ASSIGNOR-QF 0NE-TEIF'IH TO. THQMAS'. At MAYBERRY, JAMES T. MAYBERHY, GEORGE O. HZEF'ENER, .ANID E. ALDERSQN',

ALL OF HUNTINGTGN IPARK, CALIFGRNIA.

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Application filed June 2;, 1323.. Serial No." 64:6,786.

To all whom it may concern:

Be it known that I, JOHN A. 'ilfarnnnnr, a citizen of the United States, residing at Bell, in the county of Los Angeles and State of California, have invented new and useful Improvements in Tampers, of which the following is a specification,

My present invention is a tamper, and it is an object of this invention to provide a tamper suitable for use in the production of curved concrete blocks, such as may be used in the construction of cessp ols, or the like.

it is an object of thisinvention to provide a tamper of comparatively simple and rugged construction, and suitable for operation by hand, with automatic returning means; and in one preferred embodiment of my invention, the tamper is provided not only with resilient returning means, but with lateral guides and with a substantially horizontal handle.

It is. an object of this invention to provide a tamp'ing means which may advantageously be employed in connection with a table supporting a mold or molds at a .convenient elevation, my preferred construction being such as to economize both labor and space and such as to avoid all unnecessary stooping during the production of any one of a variety of blocks suitable for use in the construction of cesspools, or the like.

It is one object of this invention to provide such a support for a tamper as shall permit of its use either in a vertical or an inclined position, a preferred construction of my tamper being also such as to relieve the operative from the necessity of sustaining the entire weight of the tamper during the operation of the same.

It is a further object of my invention to provide a hand tamper whose tamping element shall be curved substantially to conform to the curvature of a mold used therewith; and, in a preferred embodiment of my invention, the tamp element may consist of or comprise an arcuate plate, supported by reinforcing means comprising a bent member which may be connected not only to the free ends of said ,arcuate member, but also to a horizontal supporting bar, the latter being optionally provided with guiding means of the character hereinafter described.

Ot-hcr objects of my invention will ap pear from the following description of a preferred embodiment thereof, and from the appended claims, taken in connection with the accon'ipanying drawing, in which:

The figure is a perspective View jof' one form of tamper embodying my invention, and the organization shown comprises also a, table upon which both a mold and a suitable tamper maybe supported at convenient level.

In the specific embodiment of my invention which I have chosen for purposes :of illustration, 1 may be regarded as a work table, adapted to support a mold 2, shown as horizontally curved and adapted to receive an arcuate or correspondingly curved tamp element 3, my present invention be ng d rected especially to means for suitably supporting and guiding" and moving the said tamp element, or its equlvalent.

Suitably to support the mentioned tamp element, I find it advantageous to employ a substantially horizontal supporting bar 4., which may be connected therewith by means comprising substantially parallel and vetical connectingmembers 55, shownas carrying a horizontal handle 6, the mentioned connecting elements being shown as secured to the body portion of the arcuate tamp element 3, and the ends of this larcuate tamp element being additionally supported by a bent reinforcing element 7,extending above the horizontal bar 4 and secured not only thereto and to the ends of the tamp element 8, but also, at the ends thereof, to the guide sleeves 8 and to a sup-porting or returning means, which may be of any preferred character, the bent reinforcing element 7 being preferably in a plane. different from that of the connectors 5, 5.

Suitably to support and automatically to return the movable organization described, after the tamp plate shall have been moved downward, I prefer to provide resilient means, such as the spring 9, which may be adjustably supported by means such as a flexible cord 10, shown as passing over a pulley 11 and as secured in any suitable manner, as by means of a hook 12, both the pulley 11 and the hook 12 being shown as secured in a frame 13, extending above and optionally supported from, or integral with, the work table 1.

To cooperate with the guide sleeves 8 upon the horizontal supporting bar 4, any suitable guide rods 14 may be provided; and I have shown these guide rods as positioned on opposite sides of my tamp elementand as pivoted at their upper ends by means of hooks l5, and engaging eyes 16, secured in the mentioned frame 13; the lower ends of these guide rods being shown as secured by brackets 17, which may be adjustable in arcuate slots 18, in side plates 19, secured to or incorporated in the mentioned frame 13, the brackets 17 being perferably provided with threaded ends and Wing nuts (not shown) to provide for their easy adjustment or firm retention in an adjusted position.

By the construction shown, it will be obvious that I have provided means for supporting a curved or other tamp element at a suitable elevation, and with adjustable means for supporting the same and guiding the same either in a vertical or in an inclined plane, as may be required by the position or character of a mold with which my tamper is designed to cooperate.

Although I have herein described but one complete embodiment of my invention, it will be understood that various features thereof might be independently employed, and also that various modifications might be made therein without departure from the spirit and scope of my invention, as the same is indicated above and in the following claims.

What I claim is:

1. A hand tamper comprising guide means, a supporting member movable upon said guide means, a tamping member carried by said sup-orting member, spring means for returning said tamping member to a predetermined position, and means for adjusting said spring means.

2. A hand tamper comprising a frame, guide rods mounted upon said frame, a

supporting member slidable upon said guide rods, a tamping member carried by said supporting member, means permit-ting said guide rods to be adjusted intoand out of a vertical position upon said frame, and spring means for elevating said supporting and tamping members into a predetermined position.

8. A hand tamper comprising a frame, guide rods mounted upon said frame, a supporting member slidable upon said guide rods, a tamping member carried by said supporting member, means permitting said guide rods to be adjusted into and out of a vertical position upon said frame, and adjustable spring means for elevating said supporting and tamping members into a predetermined position.

4. A hand tamper comprising a frame, guide rods having their upper ends pivoted upon said frame, means for adjustably securing the lower ends of said guide rods to said frame, a supporting member slidable upon said guide rode, a tamping member carried by said supporting member, a spring connected to said supporting member for returning it to apredetermined position, and means for raising and lowering said spring whereby said predetermined position may be varied.

5. A hand tamper comprising a frame, guide means mounted upon said frame, a supporting member slidable upon said guide means, a tamping member carried by said supporting member, a spring for returning said supporting andv tamping members to a predetermined position, and'an adjustable suspending element for adjustably suspending said spring from said frame whereby said predetermined position may be varied.

In testimony whereof'I have signed my name to this specification. 7

JOHN 'A. MAYBERRY. 

